128008045556 has 48 divisors (see below), whose sum is σ = 230665068480. Its totient is φ = 62123604480.

The previous prime is 128008045537. The next prime is 128008045597. The reversal of 128008045556 is 655540800821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21096035 + ... + 21102101.

It is an arithmetic number, because the mean of its divisors is an integer number (4805522260).

Almost surely, 2^128008045556 is an apocalyptic number.

It is an amenable number.

128008045556 is a deficient number, since it is larger than the sum of its proper divisors (102657022924).

128008045556 is a wasteful number, since it uses less digits than its factorization.

128008045556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6864 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 128008045556 in words is "one hundred twenty-eight billion, eight million, forty-five thousand, five hundred fifty-six".